Puzzle assembly



FIG. 1 is a front perspective view of a puzzle assembly showing my new design, the cover member shown in a removed condition;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a puzzle assembly, substantially as shown and described. 